See: https://developers.google.com/web/updates/2016/03/device-orientation-changes?hl=en
The deviceorientation event in Chrome has changed from 'world' (absolute coordinates) to 'game' (relative coordinates) matching Safari.
DeviceOrientation.js likely needs to be updated. Two options:
- Switch support for Chrome 5.0 to the 'game' processing. Or,
- Use the new deviceorientationabsolute event in Chrome 5.0 and continue to use 'world' processing.
It seems that the changes were rolled out a week ago (2016-04-25):
https://en.wikipedia.org/wiki/Google_Chrome_release_history